Indicated to achieve a balancing robot, this set consists of two wheels with 65 mm diameter, two metal geared motors with optical encoder, two brass hubs, two brackets to "L" and a bracket into 3mm thick aluminum. The motor encoder provides information about the rotation of the wheels, so you can, interfacing to a microcontroller, to know the direction and speed. Power supply: 12 Vdc. The pack comprises: two metal geared motors with optical encoder, two wheels with 65 mm diameter, an aluminum bracket by 3 mm, two supports to "L" aluminum for engines, two hubs for the wheel.

This set was used in "Open Wheels 2.0" project published on openblog

• wheels:

- External diameter: 65 mm
- Tire width: 28 mm
- Wheel hub motor shaft diameter of 4 mm

• gearmotor:

​- Power (DC): 6 V to 12 V
- No load speed: 126 rpm (12 V) - 75 rpm (6 V)
- Consumption without load: 46 mA (12 V) - 30 mA (6 V)
- Load speed: 100 rpm (12 V) - 60 rpm (6 V)
- Consumption with load: 250 mA (12 V) - 280 mA (6 V)
- Torque: 1.2 kg.cm (12 V) - 0.8 kg.cm
- Torque stalled: 4.2 kg.cm (12 V) - 2.5 kg.cm (6 V)
- Stall current: 1 A (12 V) - 900 mA (6 V)
- Reduction ratio: 1:34

• Dimensions (mm):

- Geared motor: 25 (diameter) x 52 (length)
- Aluminium Bracket: 145x27x3
- Bracket "L": 33,3x33,3x3
- Wheel: 65x26
​